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STM32F103ZEY7XXX Datasheet(PDF) 71 Page - STMicroelectronics |
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STM32F103ZEY7XXX Datasheet(HTML) 71 Page - STMicroelectronics |
71 / 123 page STM32F103xC, STM32F103xD, STM32F103xE Electrical characteristics Doc ID 14611 Rev 7 71/123 Figure 31. Synchronous non-multiplexed PSRAM write timings Table 38. Synchronous non-multiplexed PSRAM write timings(1)(2) 1. CL = 15 pF. 2. Based on characterization, not tested in production. Symbol Parameter Min Max Unit tw(CLK) FSMC_CLK period 27.7 ns td(CLKL-NExL) FSMC_CLK low to FSMC_NEx low (x = 0...2) 2 ns td(CLKH-NExH) FSMC_CLK high to FSMC_NEx high (x = 0...2) THCLK + 2 ns td(CLKL-NADVL) FSMC_CLK low to FSMC_NADV low 4 ns td(CLKL-NADVH) FSMC_CLK low to FSMC_NADV high 5 ns td(CLKL-AV) FSMC_CLK low to FSMC_Ax valid (x = 16...25) 0 ns td(CLKH-AIV) FSMC_CLK high to FSMC_Ax invalid (x = 16...25) TCK + 2 ns td(CLKL-NWEL) FSMC_CLK low to FSMC_NWE low 1 ns td(CLKH-NWEH) FSMC_CLK high to FSMC_NWE high THCLK + 1 ns td(CLKL-Data) FSMC_D[15:0] valid data after FSMC_CLK low 6 ns tsu(NWAITV-CLKH) FSMC_NWAIT valid before FSMC_CLK high 7 ns th(CLKH-NWAITV) FSMC_NWAIT valid after FSMC_CLK high 2 ns td(CLKL-NBLH) FSMC_CLK low to FSMC_NBL high 1 ns FSMC_CLK FSMC_NEx FSMC_A[25:0] FSMC_NWE FSMC_D[15:0] D1 D2 FSMC_NWAIT (WAITCFG = 0b, WAITPOL + 0b) tw(CLK) tw(CLK) Data latency = 1 BUSTURN = 0 td(CLKL-NExL) td(CLKH-NExH) td(CLKL-AV) td(CLKH-AIV) td(CLKH-NWEH) td(CLKL-NWEL) td(CLKL-Data) tsu(NWAITV-CLKH) th(CLKH-NWAITV) ai14993e FSMC_NADV td(CLKL-NADVL) td(CLKL-NADVH) td(CLKL-Data) FSMC_NBL td(CLKL-NBLH) |
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